'Sunderland lustre' has become the accepted name for all pottery decorated with pink lustre irrespective of its place of manufacture. During manufacture the applied gold leaf changed to pink. The pink areas should always give a golden lustre, especially on the edges of the pink or where it has been sponged. Many items listed on ebay as 'Sunderland' were not actually made in Sunderland or even in the North-East of England. They do however normally date from 1820 to 1870 and are valid antiques.
Two plaques which have regularly appeared on ebay feature ships called 'FLYING CLOUD BOSTON' and 'AGAMEMNON'. These were made in about 1980 as Sunderland Lustre reproductions. They sold for a few pounds and were good as decorative items. However inevitably they have been passed on as genuine antique, the 'too good to be true' price being tempting.
How do we know these are fake?
1 The pink is dull and lacks the lustre effect.
2 'FLYING CLOUD BOSTON' was never used by Sunderland potteries. (the name does appear on items by other potteries but very unlike the repro).
3 'Agamemnon in a Storm' is a genuine 19th century transfer showing an almost capsized ship, BUT simply AGAMEMNON was never used and the ship shown is not in distress.
4 The plaques are undersized and lack well defined moulded borders.
5 The crazing is too perfect.
6 You will probably never see a damaged or restored AGAMEMNON or FLYING CLOUD BOSTON plaque. (because they are so new and also if broken not worth restoring)
7. They often appear together as a pair - in shops or on ebay usually with no other genuine Sunderland lustre items.